Agricultural implement



C. H. GARDNER, JR.

' AGRICULTURAL IMPLEMENT. f APPLICATION. FILED Nov 20, 1919.

Patented J u ly 5, 1921.

2 SHEETS-SHEET I.

Charles H. Gardner Jr awed wow s. GARDNER, In. AGRICULTURAL IMPLEMENT.

APPLICATION FILED NOV 20, NHL 'l g83 g4 Patented Euly 5, 1921,

2 SHEETS-SHEET 2.

Charles H. BarfinErJn application filed ltereinoer Jn, a'citizenof the'llnited States, residing Oakland, in the county offilarneda and State of California, have invented certain new and useful improvements in Agricuh tural.lmplennents, of which the following is lit) a specification. p

This invention relates to agricultural im plements, and more particularly to a power operated cultivator, weed exterminator and pulverizer which is adapted to be manually or mechanically forcedv over a field for preparing a seed bed 'or for exterminating weeds.

Wore specifically, the invention comprehends the provision of an agricultural implement as specified, which includes a shaft rotatably supported forwardly of the main supporting frame of the implement, and carried by a pair of pivotallymounted arms to one of which a hand lever is connected by means of which a shaft may be raised or lowered out of or into operative position relative to the surface over which it is'traveling and which shaft carries a plurality of longitudinally spaced radially extending earth working teeth'or tools adapted to tear up the surface over which the implement is traveling and throw the loosened earth against'a suitableguard plate, which together with the action of the earth working teeth tends to thoroughly pulverize the ground and also to ,uproot and break up weeds or analogous growth which it is desired to exterminate.

@ther objects of the invention will appear a in the followin detailed descriptiontaken in connection wit the accompanying drawing, forming a part of this specification, an'd in which drawings:

Figure 1 is a side elevation of the proved agricultural implement. V Fig. 2 is a topplan of the agricultural i plement. Y f Fig. 3 is a detailed enlarged side 'elevation of a part of the implement illustrating the manner of pivotally mounting the operating lever for moving the earth working tool into and out of operative position, and

Fig. 4 is. a section through the tool carrying shaft illustrating the manner; of connecting the earth working teeth or tools thereto.

Referring more particularly to the draw- .ings, wherein like characters indicate like and corresponding parts throughout the Specification of Letters Patent.

' eitefi'sihnltl at" each side of the machine so, rare; Serial rm. eaaaae.

several views, the agricultural implement includes the-supporting frame 5 which can ries a rear axle upon whichthe usual type of supporting wheels 7 are mounted. A pair of front supporting wheels 8 are supported beneath the forward end of the sup porting frame 5 preferably in such' manner as to permitthem to pivot about vertical axes for facilitating the guiding of the implements.

The frame 5 has a super-supporting frame 9 attached thereto, the forward end of which incl nes forwardly terminating in a. pointed upon which bearings 11 are mounted. These bearings 11 rotatably support a shaft 12.

'llhe shaft 12 is operatlvely connected to the internal combustion engine or prime mover 13 by means of any suitable power transmitting mechanism, such as sprockets and a sprocket chain 14:. vCollau's 15 are mounted on the shaft 12 at its end and an arm 16 is rockably supported by one of'these collars extending forwardly and downwardly from the shaft 12, while a lever structure 17 .rockablysupportedby the collar atthe op .pos teaendlof theshafi'12.- This lever struc hides: a downward and forwardly" forwardly of the front end of the supporting frame 5 of the agricultural implement;

longitudinally 'spaoed openings 20 extending diametrically therethrough which receive the shanks 21 of the earth worklng'teeth or tool structures 22. The shanks 21 of the tools 2E2, have flattened and sharpened heads or points 23 upon their ends remote from the shafts 19 which shafts are bent at an acute angle to" the shanks 21 as clearly shovwn in v, l igs. l and 4 of the drawings, the teeth ex- "tendin at such angles with respect to the axis 0. rotation of the shaft 19 as to cause themto gouge into the surface over which etheiirnplement is traveling for tearing it up or pulverizing it, and this shaft 19 is connected by means of a sprocket and chain mechanism 24 to the shaft 12 for rotating The shaft liiis provided with a plurality of the shaft 19. The teeth 22am held against relative movement to the shaft- 19 by set screws 25, which extend through the shaft which bite against or en age against the shank 21 to. securely holg them. in' place. As clearly shown in Fig. 2 ofthe drawings, the arm 18 is provided with a laterally offset ' project laterally in one direction of. the

, working implements.-

frame 5, permitting the relatively wide earth The earth which is drawn up by the teeth 22'during the revolving. of-the shaft 19 is thrownagainst the forward concaved face of a shield 27, which is carried by the arms '16 and 18, and the force of impact of the dirt against this shield will tend to further pulverize the earth thereby permitting the formln'g of a relatively fine seed bed by means of the improved agricultural implement, or in case'- the lmplement is used for cultivating pur-j poses, the force of impact upon the shield 27 and the action of the teeth 22 will tear up weeds and the like and break them up in such manner as to prevent them from taking root and growing after they have been once uprooted by the implement. The final steering off of the surface over which the implement moves further adapts it for eiiicient use in mixing soil, and for mixing various types of fertilizer with the soil-so as to permit the obtaining of the best results from the use of the fertilizer. The lever 17 which i projects rearwardly over the frame 9 and has its hand grip 28 positioned so that it can be conveniently reached by the operator of the device who pushes the implement over the ground through the medium of the handles 29 is provided, regulating the depth of digging, and for moving the teeth and tools 22 and shaft 19 out of operative relation with the ground over which the implement is traveling. A bolt mechanism 30 of any approved form is carried by the lever 17 and.

co-acts with a quadrant 31 for holding the lever in various adjusted positions.

Changes in details may be made withoutdeparting from the spirit of this invention, but;

I claim: 1

1. "in a manually propelled agricultural implement, the combination of a supporting frame, a prime mover mounted upon sa1d supporting frame, a tool carrying shaft,

arms, pivotally supporting said tool carry-- ing shaft forwardly of said supporting frame, a shield connected to said arms and positioned rearwardly of said tool carrying shaft, and means for connecting said tool carrying shaft and prime mover whereby the tool carrying shaft is rotated and adapted to engage the ground in such manner as to throw clods and the like into forceful compact with the shield to pulverize the same.

ed to be rocked upon said operating shaft as a fulcrum for varying the elevation of 'said earth working tools.

v 3. A. manually propelled agricultural im-' plement comprising in combmatioma supporting frame, a prime mover mounted upon said supporting frame, an operating shaft carried by said supporting frame, and

operatively connected to said prime mover,

a tool carryingshaft, arms pivotally connecting said tool carrying shaft-to said operating shaft, a lever rigidly connected to one of said arms to regulate the, height of said tool carrying shaft with respect to the ground, and means connecting said tool carrying shaft and said operating shaft to r0- tate the tool carrying shaft.

t. In an agricultural implement, the com-- bination of a supporting frame, an operating shaft carried thereby, a lever pivotally' supported by the operating-shaft, a 'forwardly and downwardly extending arm on said lever provided with a lateral extension intermediate its ends and positioning its lower forward terminal laterally of one side of said. supporting frame, a second for-' wardly andfdownwardly extending arm pivotally carried by said shaft ad acent the slde of said supporting frame opposite that from which said first named arm extends,"

a tool carrying shaft rotatably supported by the lower ends of the arms, and a plurality of radially extending earth working tools detachably carried by said tool carrying shaft.

5. In an agricultural implement, the combination of a supporting frame, an, operating shaft carried thereby, a lever pivotally supported by the operating shaft, a forwardly and downwardly exteding arm onsaid lever provided-with a lateral extension intermediate its ends and positioning its lower forwardfterminallaterally of one side of said supporting frame, a second forwardly and downwardly extending arm pivotally carried by said shaft adjacent the side of said supporting frame oppositethat from which said first named arm extends, a tool carrying shaft rotatably supported by the lower ends of the arms, a plurality of radially extending earth working tools detachably carried by said tool carrying shaft, a

guard shield carried by said arms rearwardly of said tool carrying shaft, said tools adapted to throw soil. against said shield for breaking up clods, said lever adapted to be rocked upon said operating shaft, as a fulcrum to vary the elevatioii of said tool carried shaft and the tools carried thereby, and means for holding said lever in ad'usted position.

C AlEtLES H. GAhUNER, JR. 

